ASHWGA, might as well make it a module.

Included is a minimal linter infrastructure
and a server script because [epic rant removed]

server.js

@@ -0,0 +1,35 @@
+import {readFileSync} from 'node:fs'
+import {createServer} from 'node:http'
+
+function stamp_cors(rx) {
+	rx.setHeader('Access-Control-Max-Age', '86400')
+	rx.setHeader('Access-Control-Allow-Private-Network', 'true')
+	rx.setHeader('Access-Control-Allow-Origin', '*')
+	rx.setHeader('Access-Control-Allow-Methods', 'GET, OPTIONS')
+	rx.setHeader('Access-Control-Allow-Headers', '*')
+	// rx.setHeader('Access-Control-Allow-Credentials', 'false') // omit this header to disallow
+}
+
+const server = createServer((rq, rx) => {
+	switch (rq.method) {
+		case 'GET': {
+			rx.statusCode = 200
+			stamp_cors(rx)
+			rx.setHeader('Content-Type', 'text/javascript')
+			rx.setHeader('Cache-Control', 'no-cache')
+			const data = readFileSync('./mbchc.mjs')
+			rx.write(data)
+			break
+		}
+		case 'OPTIONS': {
+			rx.statusCode = 204
+			stamp_cors(rx)
+			break
+		}
+		default: {
+			rx.statusCode = 400
+		}
+	}
+	rx.end()
+})
+server.listen(9696, '127.0.0.1', () => console.log('Server started.'))